Chlorine will interfere with most tests for potassium monopersulfate, since both are strong oxidizers. Pools utilizing certain alternative sanitizers, such as mineral purification systems, rely on monopersulfate to destroy organic contaminants, but even the low residual of chlorine maintained in these pools makes getting a true monopersulfate reading problematic.

 

Taylor has developed a method to distinguish between the levels of free chlorine, combined chlorine, and the monopersulfate compound in the water. Taylor’s droptest kit K-1518 contains “deox reagent” to eliminate monopersulfate interference in the chlorine test. It employs FAS-DPD to determine free and combined chlorine levels. Using this product, pool managers, service technicians, and homeowners can also monitor the level of potassium monopersulfate in the water with confidence.